KR101422823B1 - Plasma Skin Treatment Apparatus - Google Patents

Abstract

The present invention provides a plasma skin treatment apparatus and a plasma skin treatment method. This apparatus includes: an electrode structure that has a power electrode supplied with AC power and interposed between dielectrics; an electrode supporting unit that is arranged in the vicinity of the electrode structure, supplies gas between a skin of a human body and a surface of the electrode structure through a side surface of the electrode structure, and has a protruding portion which is arranged on an exposed surface so that a constant gap is maintained between the skin of the human body and the surface of the electrode structure; and a housing that surrounds and supports the electrode supporting unit. Dielectric barrier discharge is performed between the power electrode and the skin of the human body.

Description

 [0001] Plasma Skin Treatment Apparatus [0002]

The present invention relates to an atmospheric pressure dielectric barrier discharge apparatus, and more particularly, to a portable plasma skin treatment apparatus using a dielectric barrier discharge.

The lowest energy state of matter is solid. The solid is energized gradually to become liquid, then to the gas. At this time, sufficient energy above the ionization energy is applied to the neutral gas, and ionization and recombination of electrons and ions can generate plasmas composed of electrons, ions, neutral atoms and molecules.

Inside the plasma, positive and negative charges are mixed in almost the same amount and are called electrically ionized conductive gas species because they maintain their electrical neutrality while performing Brownian motion close to free particles.

Plasma has several criteria such as plasma density, electron temperature, degree of thermal equilibrium between species, generation method and application field, but it is most basic to classify it into density and electron temperature. The local thermal equilibrium (LTE) and the non-local thermal equilibrium (non-LTE) can be divided into plasma by the degree of thermal equilibrium and the term local heat equilibrium means that the temperature of all of the plasma particles is The same thermodynamic state in the local region.

Plasma for research and manufacturing processes is usually either LTE or non-LTE, and the electron is commonly referred to as thermal plasma and the latter as the cold plasma.

In the present invention, a low-temperature plasma is targeted and belongs to an atmospheric plasma in a low-temperature plasma.

Atmospheric pressure plasma is mainly used for surface modification and coating of materials, environmental purification, and the like. In recent years, research has been expanded to include applications in biomedical applications and biomedical applications. Atmospheric plasma jet devices are being studied extensively in the field of biomedical research.

The electrode structure of the plasma jet is mostly a needlelike needle electrode structure, and various configuration methods are being studied depending on the power supply apparatus. An inert gas is mainly injected from the outside, and a high voltage is applied to the needle electrode structure to generate plasma. A dielectric barrier discharge (DBD) type plasma jet device having a small configuration at the center of a small circular parallel plate is also being introduced.

Various types of plasma jet power supplies are introduced according to the driving frequency. DC power supply and AC power supply are the low-frequency discharge power sources of tens to hundreds of kHz. There are radio frequency (RF) and microwave (MW) generators in the MHz to GHz range of high frequency discharge. The power consumption of each power supply varies depending on the application. The power consumption of the plasma jet used in the biomedical field is mostly less than 100 watts.

Plasma jets are often used for sterilization and sterilization purposes. Plasma containing oxygen radicals has been used for tooth whitening, pathogen destruction, and blood coagulation. Major issues in the utilization of this biomedical field are miniaturization of the device, ease of control, and stability of the human body.

It is an important task to secure the stability against electric shock to be applied directly to living cells or human body. Therefore, in order to ensure stability, a high-voltage electrode must not directly contact the sample and the human body. The driving voltage to be applied to the electrode should be lowered and the amount of plasma current should be controlled to a small value of 1 to 2 mA so as to avoid electrical shock to the living body. The minimum current that the human body can detect is about 1mA for adult men at 60 Hz commercial frequency, and the sense current increases with increasing frequency. Also, the current feeling of pain is 7 to 8 mA, and higher currents are not only electrically but also thermally dangerous.

The skin treatment apparatus according to an embodiment of the present invention can generate a wide area, low power, low temperature plasma state, and can prevent skin damage by using a dielectric-surrounded electrode to provide elastic skin.

In an embodiment of the present invention, the skin treatment apparatus has a degree of freedom for the electrode shape and can provide plasma discharge patterns in various electrode shapes according to the shapes of skin regions.

An apparatus for treating a plasma skin according to an embodiment of the present invention includes: an electrode structure that is supplied with an AC power and includes power electrodes interposed between dielectrics; Wherein the electrode structure is provided around the electrode structure to supply gas between the skin of the human body and the surface of the electrode structure through the side surface of the electrode structure and to expose the exposed surface to maintain a constant gap between the skin of the human body and the surface of the electrode structure An electrode support including a protrusion disposed on the electrode; And a housing which surrounds and supports the electrode supporting portion. A dielectric barrier discharge is performed between the power electrode and the skin of the human body.

In one embodiment of the present invention, the electrode structure includes: a first plate-shaped dielectric material having a first thickness and including a through hole; A second dielectric having a second thickness less than the first thickness and aligned with the first dielectric; And the power electrode formed on one surface of the second dielectric. The other surface of the second dielectric may be exposed in the skin direction.

In one embodiment of the present invention, the electrode is a gold, silver, copper, or molybdenum-manganese alloy, and the thickness of the electrode may be 10 to 15 micrometers.

In one embodiment of the present invention, the electrode supporting portion includes a body portion surrounding the electrode structure; A plurality of depressions recessed at a predetermined interval from a side surface of the electrode structure for spraying gas between the skin and the surface of the exposed electrode structure; A plurality of protrusions protruding at a predetermined height from a plane of the electrode structure in a direction of exposure to the skin; An inner engaging portion extending from the inner surface of the body portion toward the electrode structure to support the electrode structure; And an outer engaging portion that is recessed from the outer surface of the body portion and engaged with the housing. The inner engaging portion may be radially aligned with the protruding portion, and the outer engaging portion may be radially aligned with the depressed portion.

In one embodiment of the present invention, the electrode supporting portion includes a body portion surrounding the electrode structure; A plurality of depressions recessed at a predetermined interval from a side surface of the electrode structure for spraying gas between the skin and the surface of the exposed electrode structure; A plurality of protrusions protruding at a predetermined height from a plane of the electrode structure in a direction of exposure to the skin; An inner engaging portion extending from the inner surface of the body portion toward the electrode structure to support the electrode structure; And an outer engaging portion that is recessed from the outer surface of the body portion and engaged with the housing. The inner latching portion may be disposed between the adjacent depressed portions, and the outer latching portion may be radially aligned with the protruding portion and the depressed portion.

In one embodiment of the present invention, the housing includes: a first straight portion surrounding the electrode support; A second straight portion including an empty space inside and performing a handle function; And a curved portion connecting the first rectilinear portion and the second rectilinear portion.

In one embodiment of the present invention, the proximity sensor senses whether the skin of the human body is approaching or not. And a gas control unit for receiving the signal of the proximity sensor and controlling the gas.

In one embodiment of the present invention, the power supply unit may further include an AC power supply unit for supplying AC power to the electrode structure. The power supply unit may provide AC power of several kHz to several hundreds of kHz in the form of pulses of several Hz to several hundreds of Hz.

In an embodiment of the present invention, the power supply unit may include a charging unit, A power module that receives power from the charger and generates an alternating current; And a power control unit including a power module and a overcurrent protection circuit.

The plasma skin treatment apparatus according to an embodiment of the present invention includes an electrode structure including a protruding portion protruding from an exposed surface, the electrode structure including a plate-shaped power electrode sandwiched between dielectrics and supplied with AC power; An electrode support disposed around the electrode structure to supply gas through a side surface of the electrode structure; And a housing which surrounds and supports the electrode supporting portion. A dielectric barrier discharge is performed between the power electrode and the skin of the human body.

In one embodiment of the present invention, the electrode supporting portion includes a body portion surrounding the electrode structure; A plurality of depressions recessed at a predetermined interval from a side surface of the electrode structure for spraying gas between the skin and the surface of the exposed electrode structure; An inner engaging portion extending from the inner surface of the body portion toward the electrode structure to support the electrode structure; And an outer engaging portion that is recessed from the outer surface of the body portion and engaged with the housing. The inner latching portion may be disposed between adjacent depressed portions, and the outer latching portion may be aligned radially with the depressed portion.

According to an embodiment of the present invention, there is provided a skin treatment method comprising the steps of: providing interval maintaining means for maintaining a constant interval between a plate-shaped power electrode and skin of a human body; And applying a pulse of alternating current power to the power electrode to cause a dielectric barrier discharge between the power electrode and skin of the human body.

In one embodiment of the present invention, the operating frequency of the pulse may be between 1 Hz and 100 Hz.

According to an embodiment of the present invention, there is provided a skin treatment method comprising the steps of: providing interval maintaining means for maintaining a constant interval between a plate-shaped power electrode and skin of a human body; Providing a gas between the power electrode and the skin of the human body; And applying AC power to the power electrode to cause a dielectric barrier discharge between the power electrode and skin of the human body.

In one embodiment of the present invention, the method may further include blocking the supply of the gas or the AC power when the power electrode and the human body are separated from each other by a predetermined distance or more from the power electrode and the human body .

The skin treatment apparatus according to an embodiment of the present invention can provide a structure in which the electrode and the power module can be miniaturized and can be easily held by a human hand.

The skin treatment apparatus according to an embodiment of the present invention can eliminate the bacteria in the skin or pores of the human body, remove organic matter and foreign matter, and provide skin irritation. The skin treatment apparatus can operate as a plasma beauty apparatus.

The skin treatment apparatus according to an embodiment of the present invention can provide an electrode structure in which a miniaturized power source and a battery are mounted inside to prevent damage and pain to the human body.

A skin treatment apparatus according to an embodiment of the present invention uses a catalytic gas to efficiently generate a plasma discharge. The catalyst gas may be a mixture of nitrogen, helium, argon, and water. In addition, the catalytic gas may function as a refrigerant gas that absorbs heat and cools the electrode.

FIGS. 1A to 1D are views for explaining a plasma skin treatment apparatus according to an embodiment of the present invention.
2A is a plan view around the electrode structure of the plasma skin treatment apparatus of FIG. 1A.
And FIG. 2B is a cross-sectional view taken along the line A-A 'in FIG. 2A.
2C is a cross-sectional view taken along the line B-B 'in FIG. 2A.
3A is a perspective view illustrating an electrode structure, and FIG. 3B is a cross-sectional view taken along line CC 'in FIG. 3A.
4 is a conceptual diagram illustrating the power supply unit.
5 shows the voltage signal of the power supply unit in a state in which the load is not connected and in the state in which the load is not connected.
6A is a perspective view illustrating a plasma skin treatment apparatus according to another embodiment of the present invention.
6B is a plan view of the electrode structure of FIG. 6A.
6C is a cross-sectional view taken along line AA 'of FIG. 6B.
6D is a cross-sectional view taken along line BB 'of FIG. 6B.
7A is a perspective view illustrating a plasma skin treatment apparatus according to another embodiment of the present invention.
7B is a plan view of the electrode structure of FIG. 7A.
7C is a sectional view taken along the line AA 'in FIG. 7B.
7D is a cross-sectional view taken along line BB 'of FIG. 7B.

The plasma skin treatment apparatus according to an embodiment of the present invention performs a dielectric barrier discharge using the skin of the human body as a ground electrode. Means are provided for maintaining a gap between the skin and the power electrode to maintain a stable discharge between the skin and the plate-shaped power electrode. Also, a gas may be provided between the power electrode and the skin, so that a stable discharge can be maintained. In addition, a gas flow path may be formed through the power electrode so that the gas absorbs heat generated from the power electrode. Thus, even when performing the continuous discharge, the power electrode can operate without a separate cooling device.

Atmospheric pressure plasma is one of the most important parameters for discharging the gap between electrodes. The interval between the electrodes (power electrode and skin) is kept constant so that the discharge can be stably maintained. A gas flows between the electrode structure and the electrode support, and the gas forms a depression without protrusions in the middle in order to flow out to the outside.

Or insulators protruding from the surface of the power electrode are uniformly arranged at intervals of about 1 cm so as to maintain a constant distance between the electrodes (power electrode and skin) and stably maintain the discharge, May be about 0.5 mm to 2 mm in height. Thus, the distance between the skin and the electrode structure can be kept constant.

The gas has a gap of about 0.5 mm to about 1 mm between the power electrode and the electrode support for fixing the power electrode at equal intervals of three or four. Fluid flows through the gap to the bottom of the power electrode.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following drawings, like reference numerals refer to like elements, and the size of each element in the drawings may be exaggerated for clarity and convenience of explanation.

FIGS. 1A to 1D are views for explaining a plasma skin treatment apparatus according to an embodiment of the present invention.

2A is a plan view around the electrode structure of the plasma skin treatment apparatus of FIG. 1A.

And FIG. 2B is a cross-sectional view taken along the line A-A 'in FIG. 2A.

2C is a cross-sectional view taken along the line B-B 'in FIG. 2A.

Referring to FIGS. 1A to 1D and 2A to 2C, the plasma skin treatment apparatus 100 includes an electrode structure 130, which is supplied with AC power and includes power electrodes sandwiched between dielectrics, To supply gas between the skin 10 of the human body and the surface of the electrode structure through the side surface of the electrode structure and to maintain a constant gap between the skin 10 of the human body and the surface of the electrode structure An electrode supporting portion 120 including protrusions disposed on the exposed surface, and a housing 110 surrounding and supporting the electrode supporting portion 120. A dielectric barrier discharge may be performed between the power electrode and the skin of the human body.

FIG. 3A is a perspective view illustrating an electrode structure, and FIG. 3B is a cross-sectional view taken along line C-C 'of FIG. 3A.

3A and 3B, the electrode structure 130 includes a first dielectric layer 132 having a first thickness and including a through hole 131, a second dielectric layer 132 having a second thickness smaller than the first thickness, A second dielectric 134 aligned with the first dielectric 132, and a power electrode 133 formed on one side of the second dielectric 134. The other surface of the second dielectric layer 134 may be exposed in the skin direction. The electrode structure 130 may have a disk shape or a polygonal shape. The first dielectric layer 132 may have a circular shape and a through hole may be formed at the center of the first dielectric layer 132. And a wiring connected to the power electrode 133 through the through hole 131 may be disposed.

The thickness of the first dielectric 132 may range from a few hundred micrometers to several millimeters. The first dielectric layer 132 may have a thickness sufficient to suppress an abnormal discharge in the inner space of the housing. The material of the first dielectric layer 132 may be ceramic or silicon. The material of the second dielectric layer 134 may be ceramic or silicon. The thickness of the power electrode 133 may be several micrometers to several hundreds of micrometers. The power electrode 133 may be made of gold, silver, copper, or a molybdenum-manganese alloy. The power electrode 133 may be formed by heat-treating the second dielectric layer 134 after being coated with a conductive material. Preferably, the thickness of the power electrode 133 may be between 10 and 15 micrometers.

The electrode supporting part 120 may include a body 122 surrounding the electrode structure 130 and a plurality of electrode structures 130 disposed on the side surface of the electrode structure 130 in order to inject gas between the skin and the surface of the exposed electrode structure 130. [ A plurality of protrusions 124 protruding at a predetermined height from the plane of the electrode structure 130 in a direction in which the skin is exposed to the skin, An inner engaging portion 123 extending from the side of the body portion 122 in the direction of the electrode structure 130 to support the electrode structure and an outer engaging portion 125 engaged with the housing 110, ). The inner latching part 123 may be aligned radially with the protruding part 124 and the outer latching part 125 may be aligned radially with the depressed part 126. The electrode supporting portion 120 may be formed in a cylindrical shape of a dielectric material. The electrode supporting portion 120 may be integrally formed of Teflon.

The body portion 122 may be a toroidal shape having a rectangular cross section. A plate-shaped inner engaging portion 123 having a predetermined curvature may be disposed on the inner surface of the body portion 122. The inner fastening portions 123 may be regularly arranged with a certain angle difference.

The inner fastening part 123 may be a cut cylindrical shape having a certain azimuth angle component. The lower surface of the inner fastening part 123 may coincide with the lower surface of the body part 122. The lower surface of the body portion 122 may be disposed to face the inside of the housing 110 and the upper surface of the body portion 122 may be disposed to face the skin. The inner latching part 123 may be disposed inside the body part 122 with a predetermined spacing. The height of the inner fastening part 123 may be smaller than the height of the body part 122. Accordingly, a locking protrusion 127 may be formed on the upper surface of the inner locking part 123. The power electrode 133 may be mounted on the latching protrusion 127. The depth of the latching jaw 127 may be the same as the height of the power electrode 133.

The depression (126) may be formed by recessing the inner surface of the body portion (122). The recessed shape may be a plate shape having a constant curvature. The depressed shape may be a cylindrical shape cut with a certain azimuth angle component. Accordingly, gas can be supplied through the depression 126. The lower surface of the electrode structure 130 is exposed to a gas and the gas absorbs heat from the electrode structure 130 and flows along the depression 126. The upper surface of the electrode structure 130, / RTI > Accordingly, the thermal stability and the discharge stability of the electrode structure 130 are improved. The depressions 126 may be arranged at a plurality of intervals.

 The protrusion 124 may be disposed on the upper surface of the body portion 122. The height of the protrusion 124 may be the same as the distance between the electrode structure 130 and the skin. The shape of the protrusion 124 may be a washer shape that is cut so as to have a constant azimuth component. The projecting portion 124 may be aligned with the inner engaging portion 123 in a radial direction. The height of the protrusion 124 may be 0.5 mm to 2 mm.

The outer engaging portion 125 may be recessed from the outer surface of the body portion 122. The lower surface of the outer fastening part 125 may coincide with the lower surface of the body part 122. The outer fastening part 125 may be aligned radially with the housing part.

The housing 110 may include an engagement protrusion that engages with the electrode support 120. Accordingly, the outer engaging portion 125 can be engaged with the engaging jaw.

The housing 110 includes a first rectilinear section 110a surrounding the electrode support 120, a second rectilinear section 110c including an empty space therein and performing a handle function, And a curved portion 110b connecting the second rectilinear portion. The housing 110 may have a rectangular cross-sectional shape. The angle between the first rectilinear section 110a and the second rectilinear section 110c may be 90 degrees to 140 degrees. A gas connection part 152 may be disposed at an end of the second rectilinear section 110c. The gas connection part may be a connection part for supplying gas from the outside. The gas may be an inert gas such as argon or helium, a nitrogen (N2) gas, or a water vapor containing gas.

The first rectilinear section 110a may include a cavity therein, and the cavity may be clogged with a partition (). Thus, the supplied gas can be stored inside the cavity. The stored gas can be supplied to the discharge space while cooling the electrode structure 130 through the depression 126.

The proximity sensor 148 may sense whether the skin of the human body is approachable. The proximity sensor 148 may be mounted at one end of the first rectilinear section 110a. The proximity sensor 148 may be an infrared sensor, a pressure sensor, or a potential sensor for measuring the potential of the human body.

The gas control unit 146 may receive the signal of the proximity sensor 148 and control the gas. Only when the skin of the human body is in contact with the electrode support 120, gas is provided in the discharge space, and AC power can be provided to the power electrode. Thus, only during contact with the skin, a plasma can be generated.

The power supply unit 140 may supply AC power to the electrode structure 130. The power supply unit 140 may provide AC power of several kHz to several hundreds of kHz in the form of pulses of several Hz to several hundreds of Hz. When the power electrode is continuously supplied with power, the electrode structure 130 may be heated to 50 degrees Celsius or more. Accordingly, when the skin and the electrode structure 130 are in contact with each other, the user can suffer an image. Accordingly, the electrode structure 130 may be cooled through the pulse operation or the gas circulating through the electrode structure 130. In the case of the pulse operation, the frequency of the AC power may be several hundred Hz to several hundreds of kHz, and the pulse frequency may be several Hz to several hundreds Hz.

4 is a conceptual diagram illustrating the power supply unit.

5 shows the voltage signal of the power supply unit in a state in which the load is not connected and in the state in which the load is not connected.

4 and 5, the power supply unit 140 includes a charging unit 142, a power module 144 that receives power from the charging unit 142 to generate an alternating current, And a power control unit 145 that pulses the power module 144 and includes an overcurrent protection circuit. The upper limb power module 144 may include a DC voltage controller 144a and an AC voltage converter 144b. The power control unit may include a power switch 141. The power switch may be disposed on the handle of the housing.

The charging unit 142 may receive power from an external DC power source. The charging unit 142 may perform charging and discharging, and may be a rechargeable battery.

The power module 144 may change the DC voltage to a high-voltage AC voltage. The frequency of the alternating voltage may be several hundred kHz to several hundreds kHz. The peak-to-peak ac voltage may be between 3 kV and 8 kV. The output waveform of the power supply unit may be a sine wave file. However, when the power source unit and the load are connected to generate plasma, the output waveform of the power source unit may be distorted. The power supply unit 140 may provide a pulse operation to cool the electrode structure.

6A is a perspective view illustrating a plasma skin treatment apparatus according to another embodiment of the present invention.

6B is a plan view of the electrode structure of FIG. 6A.

6C is a cross-sectional view taken along line A-A 'in FIG. 6B.

6D is a sectional view taken along the line B-B 'in FIG. 6B.

6A to 6D, the plasma skin treatment apparatus 200 includes an electrode structure 130, which is supplied with AC power and includes a power electrode 133 interposed between dielectrics, A gas is supplied between the skin of the human body and the surface of the electrode structure through the side surface of the electrode structure 130 and a predetermined gap is provided between the skin 10 of the human body and the surface of the electrode structure 130 An electrode supporting part 220 including a protrusion 224 on a surface exposed to be held by the electrode supporting part 220 and a housing 110 surrounding and supporting the electrode supporting part 220. A dielectric barrier discharge may be performed between the power electrode 133 and the skin of the human body.

The electrode support 220 includes a body 222 surrounding the electrode structure 130 and a gap between the skin and the surface of the exposed electrode structure so as to be spaced apart from the side surface of the electrode structure 130 A plurality of protrusions 224 protruding at a predetermined height from the plane of the electrode structure 130 in a direction in which the skin is exposed and a plurality of protrusions 224 protruding from the inner surface of the body 222, An inner engaging portion 223 extending in the direction of the electrode structure and supporting the electrode structure 130 and an outer engaging portion 225 recessed from the outer surface of the body portion 222 and hooked to the housing 110 can do. The inner latching part 223 may be disposed between the adjacent depressed parts 226 and the outer latching part 225 may be aligned radially with the protruding part 224 and the depressed part 226. The latching jaw 227 may be disposed on the upper surface of the inner latching portion 223. The electrode structure 130 may be inserted into the latching protrusion 227.

7A is a perspective view illustrating a plasma skin treatment apparatus according to another embodiment of the present invention.

7B is a plan view of the electrode structure of FIG. 7A.

7C is a cross-sectional view taken along the line A-A 'in FIG. 7B.

7D is a cross-sectional view taken along the line B-B 'in FIG. 7B.

7A to 7D, the plasma skin treatment apparatus 300 includes a protruding portion 335 protruding from an exposed surface, and includes a plate-shaped power electrode interposed between the dielectrics An electrode structure 330 disposed around the electrode structure 330 to supply gas through a side surface of the electrode structure 330 and a housing for surrounding and supporting the electrode support. A dielectric barrier discharge is performed between the power electrode and the skin of the human body.

The electrode structure 130 may include a plurality of protrusions 335. The protrusion 335 may be hemispherical. The spacing between neighboring protrusions may be from a few millimeters to a few centimeters. The height of the protrusion 335 may be 0.5 mm to 2 mm. The electrode structure

The electrode structure 330 includes a first dielectric layer 132 having a first thickness and including a through hole, a second dielectric layer 132 having a second thickness smaller than the first thickness and aligned with the first dielectric layer 132, (134), and a power electrode (133) formed on one surface of the second dielectric (134). The other surface of the second dielectric layer 134 may be exposed in the skin direction. The electrode structure 330 may have a disk shape or a polygonal shape. The first dielectric may have a disc shape, and a through hole may be disposed at the center of the first dielectric. And a wiring connected to the power electrode through the through hole may be disposed. The power electrode may be formed on one side of the second dielectric, and the protrusion may be formed on the other side of the second dielectric.

The electrode supporting part 320 includes a body part 322 surrounding the electrode structure 330 and a plurality of electrode supporting parts 320 formed on the side surfaces of the electrode structure 330 and the surface of the exposed electrode structure 330, An inner engaging portion 323 extending in the direction of the electrode structure from the inner surface of the body portion 322 to support the electrode structure, and a plurality of depressions 322 And an outer engaging portion 325 that is recessed from the outer surface of the housing 110 and hooked to the housing 110. The inner latching portion 323 may be disposed between the adjacent depressions 326. The outer engaging portion 325 may be aligned radially with the depression 326.

According to a modified embodiment of the present invention, a fluid path is formed to surround the electrode structure, and the electrode supporting part or the electrode structure may include protrusions that maintain a predetermined gap with the skin. Thus, the plasma discharge is stably maintained, and the thermal stability of the electrode structure can be improved.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

110: Housing
120: Electrode support
130: Electrode structure

Claims (15)

An electrode structure that is supplied with AC power and includes a power electrode interposed between the dielectrics;
Wherein the electrode structure is provided around the electrode structure to supply gas between the skin of the human body and the surface of the electrode structure through the side surface of the electrode structure and to expose the exposed surface to maintain a constant gap between the skin of the human body and the surface of the electrode structure An electrode support including a protrusion disposed on the electrode; And
And a housing which surrounds and supports the electrode supporting portion,
A dielectric barrier discharge is performed between the power electrode and skin of the human body,
Further comprising a power supply unit for supplying AC power to the electrode structure,
Wherein the power supply unit supplies AC power having a frequency of several kHz to several hundreds of kHz in the form of pulses of several Hz to several hundreds of Hz. An electrode structure that is supplied with AC power and includes a power electrode interposed between the dielectrics;
Wherein the electrode structure is provided around the electrode structure to supply gas between the skin of the human body and the surface of the electrode structure through the side surface of the electrode structure and to expose the exposed surface to maintain a constant gap between the skin of the human body and the surface of the electrode structure An electrode support including a protrusion disposed on the electrode; And
And a housing which surrounds and supports the electrode supporting portion,
A dielectric barrier discharge is performed between the power electrode and skin of the human body,
Wherein the electrode supporting portion comprises:
A body portion surrounding the electrode structure;
A plurality of depressions recessed at a predetermined interval from a side surface of the electrode structure for spraying gas between the skin and the surface of the exposed electrode structure;
A plurality of protrusions protruding at a predetermined height from a plane of the electrode structure in a direction of exposure to the skin;
An inner engaging portion extending from the inner surface of the body portion toward the electrode structure to support the electrode structure; And
And an outer engaging portion recessed from an outer surface of the body portion and engaged with the housing,
Wherein the inner engaging portion is radially aligned with the projecting portion,
Wherein the outer engaging portion is aligned radially with the depressed portion. An electrode structure that is supplied with AC power and includes a power electrode interposed between the dielectrics;
Wherein the electrode structure is provided around the electrode structure to supply gas between the skin of the human body and the surface of the electrode structure through the side surface of the electrode structure and to expose the exposed surface to maintain a constant gap between the skin of the human body and the surface of the electrode structure An electrode support including a protrusion disposed on the electrode; And
And a housing which surrounds and supports the electrode supporting portion,
A dielectric barrier discharge is performed between the power electrode and skin of the human body,
Wherein the electrode supporting portion comprises:
A body portion surrounding the electrode structure;
A plurality of depressions recessed at a predetermined interval from a side surface of the electrode structure for spraying gas between the skin and the surface of the exposed electrode structure;
A plurality of protrusions protruding at a predetermined height from a plane of the electrode structure in a direction of exposure to the skin;
An inner engaging portion extending from the inner surface of the body portion toward the electrode structure to support the electrode structure; And
And an outer engaging portion recessed from an outer surface of the body portion and engaged with the housing,
Wherein the inner engaging portion is disposed between the adjacent depressions,
Wherein the outer engaging portion is radially aligned with the projecting portion and the depressed portion. An electrode structure that is supplied with AC power and includes a power electrode interposed between the dielectrics;
Wherein the electrode structure is provided around the electrode structure to supply gas between the skin of the human body and the surface of the electrode structure through the side surface of the electrode structure and to expose the exposed surface to maintain a constant gap between the skin of the human body and the surface of the electrode structure An electrode support including a protrusion disposed on the electrode; And
And a housing which surrounds and supports the electrode supporting portion,
A dielectric barrier discharge is performed between the power electrode and skin of the human body,
An approach detection sensor for detecting whether the skin of the human body is approaching or not; And
Further comprising: a gas control unit for receiving the signal of the proximity sensor and controlling the gas. 5. The method according to any one of claims 1 to 4,
The electrode structure comprises:
A first dielectric plate having a first thickness and including a through hole;
A second dielectric having a second thickness less than the first thickness and aligned with the first dielectric; And
And the power electrode formed on one surface of the second dielectric,
And the other surface of the second dielectric is exposed in a skin direction. 5. The method according to any one of claims 1 to 4,
Wherein the power electrode is a gold, silver, copper, or molybdenum-manganese alloy, and the thickness of the power electrode is 10 to 15 micrometers. 5. The method according to any one of claims 1 to 4,
Said housing comprising:
A first rectilinear section surrounding the electrode support section;
A second straight portion including an empty space inside and performing a handle function; And
And a curved portion connecting the first rectilinear portion and the second rectilinear portion. The method according to claim 1,
The power supply unit includes:
The external DC power is supplied to charge the charging unit
A power module that receives power from the charger and generates an alternating current; And
And a power supply control unit including a power supply module and a power supply control unit including an overcurrent protection circuit for pulsing the power module. An electrode structure including a protruding protrusion on an exposed surface, the electrode structure including a plate-shaped power electrode interposed between the dielectrics and supplied with AC power;
An electrode support disposed around the electrode structure to supply gas through a side surface of the electrode structure; And
And a housing which surrounds and supports the electrode supporting portion,
A dielectric barrier discharge is performed between the power electrode and skin of the human body,
Wherein the electrode supporting portion comprises:
A body portion surrounding the electrode structure;
A plurality of depressions recessed at a predetermined interval from a side surface of the electrode structure for spraying gas between the skin and the surface of the exposed electrode structure;
An inner engaging portion extending from the inner surface of the body portion toward the electrode structure to support the electrode structure; And
And an outer engaging portion recessed from an outer surface of the body portion and engaged with the housing,
Wherein the inner engaging portion is disposed between the adjacent depressions,
Wherein the outer engaging portion is aligned radially with the depressed portion. 10. The method of claim 9,
Further comprising a power supply unit for supplying AC power to the electrode structure,
Wherein the power supply unit supplies AC power having a frequency of several kHz to several hundreds of kHz in the form of pulses of several Hz to several hundreds of Hz. 10. The method of claim 9,
Wherein the power electrode is a gold, silver, copper, or molybdenum-manganese alloy, and the thickness of the power electrode is 10 to 15 micrometers. delete delete delete delete

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